Fuel efficiency estimation system, fuel efficiency estimation method, and computer readable medium

Abstract

A fuel efficiency estimation system includes: a velocity profile calculation unit to calculate a velocity profile indicating a change in velocity of a motor vehicle traveling a traveling route; a velocity disturbance calculation unit to calculate, based on disturbance information indicating a disturbance event occurring on the traveling route and traveling history information collected from the motor vehicle traveling the traveling route, an attenuation factor, which is a ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, as a velocity disturbance correction coefficient; and a fuel efficiency calculation unit to calculate fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient.

The invention claimed is: 
     
       1. A fuel efficiency estimation system for calculating a fuel efficiency of a motor vehicle traveling a traveling route, comprising:
 a receiver/transmitter for communicating with a motor vehicle device provided in the motor vehicle; and 
 processing circuitry configured to
 calculate a velocity profile indicating a change in velocity of a motor vehicle traveling a traveling route, 
 calculate, based on traveling history information received from the motor vehicle device and collected from the motor vehicle traveling the traveling route for each of a plurality of pieces of disturbance information indicating a plurality of disturbance events occurring on the traveling route, an attenuation factor, which is a ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, for each of the plurality of pieces of disturbance information and to calculate an average value of a plurality of said attenuation factors each acquired for each of the plurality of pieces of disturbance information as a velocity disturbance correction coefficient, 
 calculate fuel efficiency of the motor vehicle traveling the traveling route using the velocity profile and the velocity disturbance correction coefficient, and 
 tranmitting the calculated fuel efficiency to the motor vehicle device for display along with the traveling route. 
 
 
     
     
       2. The fuel efficiency estimation system according to  claim 1 , wherein
 the processing circuitry calculates the velocity disturbance correction coefficient based on at least congestion information indicating a congestion situation of the traveling route as the disturbance information. 
 
     
     
       3. The fuel efficiency estimation system according to  claim 2 , wherein
 the processing circuitry calculates the velocity disturbance correction coefficient based on at least the congestion information and event information indicating an event occurring on the traveling route as the disturbance information. 
 
     
     
       4. The fuel efficiency estimation system according to  claim 1 , wherein the processing circuitry
 calculates a deterioration ratio, which is a ratio of deterioration of the fuel efficiency of the motor vehicle traveling the traveling route, as a fuel efficiency disturbance correction coefficient, based on the disturbance information and the traveling history information, and 
 estimates the fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile, the velocity disturbance correction coefficient, and the fuel efficiency disturbance correction coefficient. 
 
     
     
       5. The fuel efficiency estimation system according to  claim 4 , wherein
 the processing circuitry calculates the fuel efficiency disturbance correction coefficient based on at least weather information indicating weather on the traveling route as the disturbance information. 
 
     
     
       6. The fuel efficiency estimation system according to  claim 5 , wherein
 the processing circuitry calculates the fuel efficiency disturbance correction coefficient based on at least the weather information and warning alert information indicating a warning or an alert for the traveling route as the disturbance information. 
 
     
     
       7. The fuel efficiency estimation system according to  claim 4 , wherein the processing circuitry
 stores the traveling history information as being classified by the disturbance event, and 
 calculates the velocity disturbance correction coefficient based on the traveling history information classified by the disturbance event and stored, and the disturbance information. 
 
     
     
       8. The fuel efficiency estimation system according to  claim 7 , wherein
 the processing circuitry calculates the fuel efficiency disturbance correction coefficient based on the traveling history information classified by the disturbance event and stored, and the disturbance information. 
 
     
     
       9. The fuel efficiency estimation system according to  claim 7 , wherein the processing circuitry
 acquires position information including an origin and a destination, and 
 calculates the velocity profile based on an acquisition date and time when the position information is acquired and a traveling velocity for each of road sections configuring the traveling route when the traveling route is traveled with date and time attributes of the acquisition date and time. 
 
     
     
       10. The fuel efficiency estimation system according to  claim 9 , comprising:
 a motor vehicle device mounted on the motor vehicle traveling the traveling route and a fuel efficiency estimation device to communicate with the motor vehicle device, wherein 
 the processing circuitry of the motor vehicle device transmits the position information to the fuel efficiency estimation device, and 
 the processing circuitry of the fuel efficiency estimation device calculates the traveling route based on the position information. 
 
     
     
       11. The fuel efficiency estimation system according to  claim 10 , wherein
 the processing circuitry of the motor vehicle device further transmits the traveling history information indicating traveling history of the motor vehicle to the fuel efficiency estimation device, and 
 the processing circuitry of the fuel efficiency estimation device classifies the traveling history information for each road section, then classifies the traveling history information by the disturbance event, and accumulates the traveling history information. 
 
     
     
       12. The fuel efficiency estimation system according to  claim 11 , wherein
 the processing circuitry of the fuel efficiency estimation device 
 calculates the velocity profile indicating the change in velocity of the motor vehicle traveling the traveling route, 
 calculates, based on the traveling history information collected from the motor vehicle traveling the traveling route for each of the plurality of pieces of disturbance information indicating the plurality of disturbance events occurring on the traveling route, the attenuation factor, which is the ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, for each of the plurality of pieces of disturbance information, and calculates the average value of the plurality of said attenuation factors each acquired for each of the plurality of pieces of disturbance information as the velocity disturbance correction coefficient, 
 calculates the deterioration ratio, which is the ratio of deterioration of the fuel efficiency of the motor vehicle traveling the traveling route, as the fuel efficiency disturbance correction coefficient, based on the disturbance information and the traveling history information, and 
 calculates the fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient. 
 
     
     
       13. The fuel efficiency estimation system according to  claim 9 , comprising:
 a motor vehicle device mounted on the motor vehicle traveling the traveling route, wherein 
 the processing circuitry of the motor vehicle device
 calculates the traveling route based on the position information, 
 collects the traveling history information indicating traveling history of the motor vehicle, and 
 classifies the traveling history information for each road section, then classifies the traveling history information by the disturbance event, and accumulates the traveling history information, and 
 
 the processing circuitry of the motor vehicle device further calculates, based on the traveling history information collected from the motor vehicle traveling the traveling route for each of the plurality of pieces of disturbance information indicating the plurality of disturbance events occurring on the traveling route, the attenuation factor, which is the ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, for each of the plurality of pieces of disturbance information and calculates the average value of the plurality of said attenuation factors each acquired for each of the plurality of pieces of disturbance information as the velocity disturbance correction coefficient, calculates the deterioration ratio, which is the ratio of deterioration of the fuel efficiency of the motor vehicle traveling the traveling route, as the fuel efficiency disturbance correction coefficient, based on the disturbance information and the traveling history information, calculates the velocity profile indicating the change in velocity of the motor vehicle traveling the traveling route, and calculates the fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient. 
 
     
     
       14. The fuel efficiency estimation system according to  claim 9 , comprising:
 a motor vehicle device mounted on the motor vehicle traveling the traveling route, the processing circuitry of the motor vehicle device transmitting the position information and the traveling history information indicating the traveling history of the motor vehicle; 
 a traveling history accumulation server, the processing circuitry of the traveling history accumulation server receiving the traveling history information from the motor vehicle device, classifying the traveling history information for each road section, then classifying the traveling history information by the disturbance event, and accumulating the traveling history information; 
 a disturbance information generation server, the processing circuitry of the disturbance information generation server receiving the traveling history information from the traveling history accumulation server and calculating the velocity disturbance correction coefficient and the fuel efficiency disturbance correction coefficient based on the traveling history information and the disturbance information; and 
 a fuel efficiency calculation server, the processing circuitry of the fuel efficiency calculation server receiving the position information from the motor vehicle device, receiving the velocity disturbance correction coefficient and the fuel efficiency disturbance correction coefficient from the disturbance information generation server, and calculating fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient. 
 
     
     
       15. The fuel efficiency estimation system according to  claim 9 , comprising:
 a motor vehicle device mounted on the motor vehicle traveling the traveling route, the processing circuitry of the motor vehicle device transmitting the traveling history information indicating the traveling history of the motor vehicle; 
 an information generation calculator provided for each road section that is present on the traveling route, the processing circuitry of the information generation calculator calculating the velocity disturbance correction coefficient and the fuel efficiency disturbance correction coefficient based on the traveling history information and the disturbance information; and 
 an information accumulation server, the processing circuitry of the information accumulation server receiving the traveling history information from the motor vehicle device, classifying the traveling history information for each road section, then classifying the traveling history information by the disturbance event, and accumulating the traveling history information, receiving the velocity disturbance correction coefficient and the fuel efficiency disturbance correction coefficient from the information generation calculator, and storing the received velocity disturbance correction coefficient and fuel efficiency disturbance correction coefficient. 
 
     
     
       16. The fuel efficiency estimation system according to  claim 15 , wherein
 the processing circuitry of the motor vehicle device calculates the traveling route based on the position information, and receives the velocity disturbance correction coefficient from the information accumulation server and the fuel efficiency disturbance correction coefficient. 
 
     
     
       17. A non-transitory computer readable medium storing a fuel efficiency estimation program that causes a computer to execute a process for calculating a fuel efficiency of a motor vehicle traveling a traveling route, the process comprising:
 receiving, from a motor vehicle device provided in the motor vehicle, traveling history information collected from the motor vehicle traveling the traveling route for each of a plurality of pieces of disturbance information indicating a plurality of disturbance events occurring on the traveling route 
 calculating, using server processing circuitry, a velocity profile indicating a change in velocity of a motor vehicle traveling a traveling route; 
 calculating, using server processing circuitry, an attenuation factor, based on the received traveling history information, the attenuation factor being a ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, for each of the plurality of pieces of disturbance information, and calculating an average value of a plurality of said attenuation factors each acquired for each of the plurality of pieces of disturbance information as a velocity disturbance correction coefficient; 
 calculating, using the sever processing circuitry, fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient; and 
 transmitting, to the motor vehicle device, the calculated fuel efficiency to the motor vehicle device for display along with the traveling route. 
 
     
     
       18. A fuel efficiency estimation method for calculating a fuel efficiency of a motor vehicle traveling a traveling route, comprising:
 receiving, from a motor vehicle device provided in the motor vehicle, traveling history information collected from the motor vehicle traveling the traveling route for each of a plurality of pieces of disturbance information indicating a plurality of disturbance events occurring on the traveling route; 
 calculating, using server processing circuitry, a velocity profile indicating a change in velocity of a motor vehicle traveling a traveling route; 
 calculating, using the server processing circuitry, an attenuation factor, based on the received traveling history information, the attenuation factor being a ratio of attenuation of the velocity of the motor vehicle traveling the traveling route, for each of the plurality of pieces of disturbance information, and calculating an average value of a plurality of said attenuation factors each acquired for each of the plurality of pieces of disturbance information as a velocity disturbance correction coefficient; and 
 calculating, using the server processing circuitry, fuel efficiency of the motor vehicle traveling the traveling route by using the velocity profile and the velocity disturbance correction coefficient, and 
 transmitting, to the motor vehicle device, the calculated fuel efficiency to the motor vehicle device for display along with the traveling route.